/Engine/Plugins/Runtime/SmartObjects/Source/SmartObjectsModule/Public/SmartObjectRuntime.h
Delegate fired when a given tag is added or removed. Tags on smart object are not using reference counting so count will be 0 or 1
typedef TBaseDelegate_TwoParams< void, const [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag), int32 > FOnSmartObjectTagChanged